Time lags in a two-zone air movement model.

Multi-zone models of air movement in buildings usually assume that there is no time lag in the flows between zones. Nevertheless, such time lags could have a significant effect on the pattern of contaminant distribution throughout a building. This note shows how such effects can be evaluated by examining theoretically a two-zone model with time lags. The results have implications for the interpretation of tracer decay measurements. [ABSTRACT FROM PUBLISHER]